The Hyundai i20 Elite Sportz return a mileage of 15 kmpl with or without AC. The fact is not 100 percent true that AC decreases the mileage. In small engined petrol cars, AC puts a lot of extra effort to the engine, which significantly decreases the mileage whereas in cars with bigger motors the problem does not persist. Specially in diesel engines, the AC puts very less pressure to the car, that too felt when revving the same on high speeds. The roll down of windows also create a lot of drag, resulting in the same negative impact faced by the car with its AC on. The i20 is powered by a 1.4 L diesel motor, producing a lot of power to overcome the consequences.

All You Need to Know about Hyundai Elite i20